/Engine/Source/Runtime/Engine/Public/Streaming/TextureMipDataProvider.h
Abort anything that could be stalling the update inPollMips(). Called from an async task. Expected behavior is to cancel any pending IO operations. Called when the FTextureStreamIn update is cancelled and the current step is to be waiting on uponPollMips(). This is becauseCancel()can only be executed when any pending operations are completed (seeFTextureUpdateSyncOptions).
virtual void AbortPollMips()